Sealing-machine.



J. MAcLAURIN.

SEALING MACHINE.

APPLICATION FILED JUNE 23. I915.

1 ,1 96,796. Patented Sept; 5, 1916. I

llniwnfur fa/m ifaa Lauri 7 SEALING-MACHINE Application filed June 23,1915. Serial No. 35,947. j 1

To all whom it may concern Be it known that I, JOHN MAGLAURIN, a Subjectof the King of England, residing at Brookfield, in the county ofWorcester and State of Massachusetts, have invented certain new anduseful Improvements in Sealing-Machines; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to sealing machines and comprises a machine forapplying an insoluble binding tape having an adhesive applied to oneface thereof, and which adhesive is softened in its subjection to heat.

An object of this invention is the provision of a machine for feeding,applying and severing a tape having an adhesive face which is applied bythe application of heat.

A further object of this invention is a provision of a means forsevering the tape where desired and for the discontinuance of feedingthe tape to be applied.

A further object of this invention is the provision of checking rollersfor restricting the passage of tape through the machine to onedirection.

Further objects will be apparent from the following specification,appended claims and drawings thereof, in which- Figure 1 is a sideelevation of a machine constructed in accordance with this invention,Fig. 2 is a vertical sectional view in a plane parallel to that shown inFig. 1, and Fig. 3 is a vertical cross sectional view through themachine.

This invention provides for the application of a binding tape by theapplication of heat to said tape to soften the adhesive face thereof,and at the same time to direct the course of the machine in applyingsaid tape as well as applying pressure to the tape to cause the same tofirmly set.

Referring to the drawings there is shown a frame 10 having a handle 11thereon for convenient manipulation by an operator. The frame isprovided as at 12 with a slot to receive a binding tape from any sourceof supply such as a suspended reel from where said tape is advancedbetween the rollers 13 and 14 of which the roller 13 has aratchet 15formed thereon to receive a pawl 16 and thereby restrictthe rotation ofthe roller 13 to one direction, while the roller 14 is rotatably mountedon an elongated bearing 17 to Specification of Letters Patent. PatentedSept. 5, 1916.

permit vertical movement of said roller with respect to-the frame toreceive the adhesive tape between the rollers 13 and 14 and thetrunnions of the roller 14 are pressed downwardly as by a spring 18 ateach end of said restricting rotation of said roller to one direction. Apressure roller 22 is movably journaled in'the elongated bearings 23 andis normally pressed into engagement with the periphery of the roller 19or an adhesive tape there-about, as by the cam slots 24 formed in thearms 25 of a lever which is fulcrumed as at 26 and has a spring 27attached to. the handle 28 thereof, the spring 27, bearing against theunderside of the handle 11 to normally force the handle 28 away from thehandle 11 and thereby exert pressure on the periphery of the roller 22.An arm 29 is pivoted upon the pin 26 and has a shoulder 30- formedthereon with which a lug 31 engages when the handle 28 has been swungthrough a portion of its movement and as the arm 29 is swung, a link 32connecting this arm and a cutter 33 causes said arm to actuate saidcutter and move the same across an opening 34 through which the tapepasses and thereby sever the tape. It is apparent that when the handle28 is raised to cut the tape, thepressure roller 22 to actuate saidcutter. As the roller 22 res leases the tape, it is prevented from beingwithdrawn from the machine by the rollers 13 and 14 which check itsrearward movement.

After the tape has passed through the machine and upon the article towhich said tape is to be applied, the applying roller 19 passes over thetape and continues to advance the tape and as the tape is deposited uponthe article such as the wrapper of a bundle, a heater 35 contactstherewith, when it softens the adhesive and at the same time presses thesealing tape firmly upon the wrapper to allow the adhesive face tofirmly set so that as soon as the heater has passed over the tape, theadhesive face of this tape firmly sets and forms a perfect seal. It isapparent. that any form of heater may be applied to this inventionwithout changing Ill the spirit thereof, as it is possible to substitutea rotary heater such as to convert the roller 19 into a heater, but forconvenience, it"will be understood that the heater 35 is one of acommon. type utilizing electricity for the generation of heat.

Various modifications may be made within the scope of this inventionwithout departing from the spirit thereof and the drawings aresubmitted. for illustrative purposes only.

Having thus described my invention, I claim 1. In a sealing machine, aframe, an applying roller journaled therein, a pressure roller co-actingwith said applying roller for advancing a sealing tape, a cutter forsevering the tape, a heater for softening the adhesive surface ofthesealing tape, and a lever for moving the pressure roller to spacedrelation with respect to said applying roller and simultaneouslyactuating said cutter.

2. In a sealing machine, a frame, an applying roller journaled therein,said applying roller being restricted to rotation in one pressure rollerco-acting with said applying roller for advancing a sealing tape, meansfor releasing said pressure roller from engagement with said applyingroller,

icence between the applying and pressure rollers,

a manually operated lever having cam slots formed therein for movingsaid pressure roller from co-acting relation with said applying roller,and an arm actuated by said lever for actuating said cutter.

5. In a sealing machine, a frame, an applying roller journaled thereinfor rotation in one direction, checking rollers journaled in said frameto receive a web of sealing tape therebetween, a pressure roller carriedby said frame coacting with said applying roller, said pressure rollerbeing journaled in slots radially disposed with respect to said applyingroller, a lever fulcrumed to said frame, said lever supporting armswhich straddle said pressure roller, said arms of said lever beingslotted eccentrically with respect to the fulcrum for said lever,saidslotted arms also supporting said pressure roller, a cutter carried bysaid frame, an arm connected to said cutter, said arm being actuated bysaid lever upon com- I pression of a limited movement of said lever anda heating element carried by said frame to overlie a sealing tapesupplied by said applying roller to soften the adhesive surface of saidsealing tape.

In testimony whereof I afl'ixmy signature in presence of two witnesses.

JOHN MACLAURIN.

